Investigating the impact of urban development on the activation of a paleolandslide. A case study from Pissouri, Cyprus

IF 3.7 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL

Bulletin of Engineering Geology and the Environment Pub Date : 2024-10-01 DOI:10.1007/s10064-024-03903-7

Ploutarchos Tzampoglou, Dimitrios Loukidis, Epameinondas Karlas, Cristiano Tolomei, Nikos Svigkas, Giuseppe Pezzo, Niki Koulermou, Aristodemos Anastasiades, Constantinos Loupasakis

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Abstract

The present study investigates the reactivation of a paleolandslide due to the expansion of a community in an area covered by plastic Pliocene marls in the southwestern part of Cyprus. The landslide, which takes place in an area with gently sloping ground and relatively shallow water table, affects more than 100 residential buildings. In the context of the study, building damages and ground surface ruptures were mapped through field work campaigns. Remote sensing data from InSAR (Interferometric Synthetic Aperture Radar) analysis were evaluated in conjunction with available geological, geotechnical and hydrogeological data. Subsequently, the landslide was backanalyzed using the finite element method to examine possible failure mechanism scenarios and shed light on the influence of potential triggering factors. The results indicate that the paleolandslide has been almost fully reactivated, with the main cause of the reactivation being the rising of the phreatic water table due to long-term discharges of wastewater through the absorption pits of the residential developments. The water table rise was further amplified by rainwater infiltration during rainy years. According to the backanalysis results, the slip surface follows the bedding planes of weak marl horizons with residual friction angle of the order of 10°.

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调查城市发展对古滑坡活化的影响。塞浦路斯皮苏里案例研究

本研究调查了塞浦路斯西南部一个被上新世可塑泥灰岩覆盖的地区因社区扩张而重新引发的古滑坡。滑坡发生在地势平缓、地下水位相对较浅的地区，影响到 100 多栋居民楼。在这项研究中，通过实地考察绘制了建筑物受损情况和地表破裂情况图。结合现有的地质、岩土工程和水文地质数据，对 InSAR（干涉合成孔径雷达）分析得出的遥感数据进行了评估。随后，使用有限元方法对滑坡进行了反分析，以研究可能的破坏机制，并阐明潜在触发因素的影响。结果表明，古滑坡几乎已完全重新激活，重新激活的主要原因是由于住宅开发项目的吸水坑长期排放废水导致地下水位上升。雨季的雨水渗透进一步加剧了地下水位的上升。根据反向分析结果，滑移面沿弱泥灰岩地层的基底面滑移，残余摩擦角约为 10°。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.